Window fastener



March 29 1927' J. RETZLAFF WINDOW FASTENER File'd April 2o, 1925Patented Mar. 29, 1927.

.romaMrrzmaiifr;` or OMAHA., NEBRASKA.

WINDOW msrnnnn.

Application 1611. April 20, 1925.` Serial, No.` 24,697.

The nventionrelates to window fasteners and has, for its object toprovide a device oftjhis character which is carried by the side rails ofa-sash,A and cooperates with a.

window frame in the sash groove for hold i-ngthe sash. in various;positions against movement, thereby allowing-a sash to be raisedV orlowered for Ventilating purposes,

and,` at the same time. holding the :sash:

against movementsuiicientlyi to allow un,- authorized persons, to enterthrough the window.

A further object is to provide a sash holding;` device comprising a.plate carried bythe inner side of the. sash and arching afreeess. in theface of the sash.` anldprovided with a. notched bar cooperating withthe4 plate, `vertically disposed overlapping rork levers carried by theplate and controlling pivoted window frame. engaging members lthroughlinks. connected to the window `iframe members and the roc-k leversV andlink connections between the overlapped er1-dis ofi-the rock levers andthe notched bar,` said notched. bar forming means .whereby the windowframe engaging member may be moved into. and outof engagement with thewindow frame. Also to provide latching means carried by the plate andCoopera ting with the notched bar for positively holding said notchedbar against movement.

A further object is to provide spring means cooperating with theoverlapped rock levers for normally maintaining the pivoted window frameengaging members in inoperative position.

With the above and other objects in view the invention resides in thecombination and arrangement of parts as hereinafter set forth, shown inthe drawing, described and claimed, it being understood that changes inthe precise embodiment of the invention may be made within the scope ofwhatis claimed without departing from the spirit of the invention.

In the drawing Figure 1 is a vertical longitudinal sectional viewthrough the side rail of a window sash showing the fastener appliedthereto.

Figure 2 is a perspective view'of the window fastener plate.

Figure 3 is a horizontal sectional view taken on line 3--3 of Figure 1.

Referring to the; drawings the numeral l designates the` vertical siderail ofiacon` v entional form of window sasliandZ apor` tion of aconventional form- Q-f window, frame. Secured tow the inner side of' thesash. railV 1 by means of screwsY 3, which extend through the flanges, 4and: 5thereof isa plate 6,4 and which plate is pref-F erably countersunkA into the rail. The ange 5 has pivotally mountedtherei'n. at. 7toothed gripping members 8,c which. mem: bers are adapted to be movedinwardlyand' outwardly for releasing and holding. the,l windowsash.,vPivetall'ycollnected atl9 Ato the-inner ends of the gripping members .8areinvvardly extending links 10,.'which,links.l entendA into thechambered' membersA 11j. and have their other ends pivotally connectediat l2 to thevertically disposed rockilevers 13;

The rock levers 13 are pivotally mounted on pins 14 carried bythe plate6andhavetheir adjacent ends overlapped as. clearly shown infv Figurey 1.Pivotall'yconnected at 15k/to the overlapped ends of thefrock levers 13;are. links 16 which links; converge and' are. piyotally connected at 17to, asl'ide. barlS. It. will beseen that when. the slide bar 18.. is`forced inwardly, the';l evers. will be. rocked on their pivotal voi'nts14, thereby imparti-ng pulls on the inks 10 and the toothed grippingmembers 8 will be moved inwardly to inoperative positions out ofengagement with the window frame 2 for allowing spring movement of thewindow sash. It will also be seen that when the toothed bar 18 is pulledoutwardly the rock levers .13 will be rocked in a manner whereby thelinks 10 will be forced outwardly into biting engagement with the windowframe 2 for positively holding the window sash against movement, and inany adjusted position. To maintain the parts in inoperative position,coiled springs 19 are provided, which coiled springs are connected at 20to the rock levers 13, and to theeyes 21 carried by the flange 5 of theplate, therefore it will be seen that when an upward movement isimparted on the handle end of the notched bar 18 for moving the same outof cooperative engagement with the edge 22 of the ange 4, the springswill immediately move apart to inoperative positions.

When it is desired to latch the window the operator grasps the handlemember 22 of the notched bar 18, and pulls outwardly Cil thereon, whichaction will force the gripping members 8, and said gripping members 8will be held in outward gripping position by the edge 22 of the iiange4L engaging one of the notches 24 of the notched bar. -When it isdesired to positively lock the bar 18 against movement the plate 25 ismoved downwardly into engagement with the upper side of the notched barand securely held by means of the set screw Q6, which extends throughelongated slot 27 in the plate and is threaded into the flange 4,therefore it will be seen that the device may be positively lockedagainst movement.

From the above it will be seen that a sash 'fastening and holding deviceis provided which is simple in construction, positive in its operationand provided with a system of leverage which insures considerable powerbeing applied to the pivoted gripping members 8.

The invention having been set forth what is claimed as new and useful isl. The combination with a window sash, of a sash holding device. saidsash holding device comprising a notched bar., a holding meanscooperating with the notched bar for holding the same in adjustedposition, div-erging links pivotally connected to the notched bar,pivoted overlapping rock levers, said diverging links being pivotallyconnected to the overlapped ends of the rock levers, pivoted windowframe engaging members, said window frame engaging members extendingtowards each other, link connections between the rocking levers and theadjacent ends of the window frame gripping members, and spring meanscooperating with the rock levers and normally mainiaaeos taining thegripping members out of enn gagement with the window frame.

2. The combination with the side rail of a window sash, of a sashholding device, said device comprising vertically disposed rock levers,the adjacent ends of said rock levers being overlapped, an operatingbar, link connections between the operating bar and the overlapped endsof the rock levers, pivoted window frame engaging members, linkconnections between the window frame engaging members and the lock barsand spring means cooperating with the rock bars for maintaining the samein inoperative p0- sitions.

The combination with the side rail of a window sash, of a sash holdingdevice, said device comprising a plate arching the inner side of thewindow frame, a flange carried by said plate and engaging the outer sideof the rail, a flange carried by said plate and engaging the inner sideof the rail, vertically disposed overlapped rock levers carried by theplate and disposed in a recess of the rail, a notched operating barextending through the inner flange of the plate, a detent cooperatingwith said notched bar for holding the same in adjusted positions, linkconnections between the rock bars and the notched barpivotcd windowframe engaging members pivotally in chambered members carried by theouter iiange of the plate and link connections between the outer ends ofthe rock bars and the pivoted window frame engaging members.

In testimony whereof I hereunto atliX my signature.

JOI-IN RETZLAFF.

